- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 3/20 - Activated sludge processes using diffusers
Patent holdings for IPC class C02F 3/20
Total number of patents in this class: 583
10-year publication summary
|
55
|
53
|
59
|
50
|
47
|
44
|
36
|
26
|
31
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BL Technologies, Inc. | 838 |
21 |
| Prosper Technologies, LLC | 31 |
11 |
| Invent Umwelt-und Verfahrenstechnik AG | 130 |
10 |
| Metawater Co., Ltd. | 201 |
10 |
| Kurita Water Industries Ltd. | 1258 |
9 |
| SSI Aeration, Inc. | 16 |
9 |
| Fluence Water Products and Innovation Ltd | 21 |
9 |
| AQUACONSULT Anlagenbau GmbH | 15 |
8 |
| Enviromix, Inc. | 19 |
8 |
| Kubota Corporation | 4218 |
8 |
| BKT Co., Ltd. | 64 |
7 |
| Tomorrow Water | 19 |
7 |
| General Electric Company | 13819 |
6 |
| Artemis Rubber Technology Inc. | 22 |
6 |
| Doosan Heavy Industries & Construction Co., Ltd. | 580 |
6 |
| Membion GmbH | 27 |
6 |
| Xylem Water Solutions U.S.A., Inc. | 35 |
6 |
| Toray Industries, Inc. | 7036 |
5 |
| Absolute Aeration | 7 |
5 |
| Somerset Environmental Solutions Inc. | 6 |
5 |
| Other owners | 421 |